Men and women are not equal, Vector, for the same reason a pickup truck and a minivan are not equal. They both get different gas mileage, can carry different amounts and types of cargo, have different horsepowers, one is a stick, one is automatic, one has a tow hitch, one has a hatchback. It would be a fallacy of the highest order to look at two automobiles built for entirely different purposes and say they are equal in all respects because they both automobiles. It is also a fallacy of the highest order to assume they are never equal. A minivan and a pickup truck can both transport a single operator to and from work. A minivan and a pickup truck can both carry the groceries home. But most people do not take a minivan to a gravel yard to pick up two tons of sand, and most people do not throw the kids in the back of the pickup truck to take them to soccer. That is not to say you cannot do either. And that is certainly not to say that all pickup trucks are better than minivans at the usual pickup truck strong suit. A full cab pickup truck might be great for taking the kids to soccer. A minivan with removable seats could carry new furniture home through the rain.
Thus the purpose of the quotation is to highlight that there is a false dichtonomy. The question is not "are men better than women" or "are women better than men", but a much more difficult to grasp "men are better than women and women are better than men, with individual exceptions to the norm". My wife struggles with basic arithmetic, while you perform calculations I can't begin to comprehend. It is obviously false to say men are better than women at math because you are better than me at math, but it is similarly false to say men and women are equal at math because my wife is not equal to either myself or a woman such as yourself. Likewise I can't give birth or nurse but she can't work for two months after childbirth. Sometimes the differences are software and sometimes they are hardware, but when people point out a difference there's no sense in assuming they do so out of bigotry.